Lard-press.



No. 65l,805.

Patented lune I2, i900. C. KEMPF.'

LARD PRESS.

(Application mea Aug. 4', 1899.)

(No Model.)

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NITED STATES PATENT Fries.

OARLKEMPF, OF MILWAUKEE, VISOONSIN, ASSIGNOR OF ONE-HALF TO BERNHARD HUBER, OF SAME PLACE.

LARD-PRESS.

SPECIFICATION forming part of Letters Patent N o. 651,805, dated June 12, 1900.

Application filed August 4, 1899. Serial No. 726,214. (No modrl.)

.To @ZZ whom it may concern:

Be it known that I, CARL KEMPF, a citizen of the United States, residing at Milwaukee,` in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Lard-Presses, of which the following is a specification.

My invention relates to lard-presses; and its primary object is to provide a press from which the cake of compressed material technically known as cracklings7 may be readily removed.

In the rendering of the lard great difiiculty has been experienced heretofore in removing the compressed cake from the press, it being frequently necessary to employ a sharp instrument for this p-urpose. This invention is designed to avoid this objection and to provide means whereby the cake may be quickly removed intact in a single piece.

The construction of the press will be fully described hereinafter and its novel features defined in the appended claims in connection with the accompanying drawings, which form a part of this specification, and in which- Figure lis a longitudinal section of a press embodying the invention in connection with a strainer and cooler; and Fig. 2 is a similar view of the press, showing the compressionplate" thereof in the position it occupies after the cracklings have been fully compressed.v

The reference-numeral 1 designates a tank of cylindrical form provided at its bottom with a central discharge-spout 2, which conveys the liquid lard into a strainer 3, depending from the bottom of the tank and perforated at its bottom, as shown, to permit the liquid to flow into a cooler 4. One or more perforated diaphragms 5 are located within the strainer.

6 designates a perforated vessel having an imperforate bottom 7 and permanently located Within the tank or vessel 1, with its bottom above the bottom of the vessel 1 to leave a space 8 between the two bottoms. A loose disk or false bottom 9 rests upon the bottom '7 of the vessel 6 and is provided at diametrically-opposite points with perforated metallic straps 10, which are turned outward at their upper ends to form handles 11 for the false bottom 9.

12 designates the platen of the press, comprising a disk adapted to it within the vessel 6 and adapted to be operated by a screw 13 in the manner well known in the art to which the invention relates. This screw 13 is loosely secured to the upper-side of the platen 12, so as to revolve without revolving the platen.`

The under side of the platen or plunger 12 and the upper surface of the false bottom 9 are each provided with a covering or lining 14, of felt or like material, to prevent the adhesion of the compressed cracklings to these parts.

The platen or plunger 12 is provided with means for securing the platen to the perforated straps or handles 10. I have shown oppositely-arranged sliding bolts or lockingpins 15 for this purpose, said bolts or pins sliding in keepers 16 on the'platen. Any

other construction of locking device, however,

may be employed, the invention not being restricted to any specific means for securing the platen and handles together.

The operation of the press is as follows: The cooked material from the cooking-kettle is poured into the inner vessel 6, after which the plunger or platen 12 is forced down by its screw to express the liquid lard from the cooked mass. The liquid passes through the perforations in the vessel 6 to the dischargespout 2 of the outervessel. After the cranklings have been compressed to the maximum extent, as indicated in Fig. 2, the locking pins or bolts 15 are pushed into engagement with the adjacent holes or perforations in the straps 10, thus securing the false bottom 9 to the platen. By then reversing the movement of the screw the platen is raised out of the vessel 10, bringing with it the cake of compressed cracklings, which can then be quickly removed intact, the felt linings 14 preventing sticking or adhesion of the cake to either the platen or the false bottom.

The relative arrangement of the press, strainer, and cooler is such as to avoid all Waste of lard and provide a direct feed of the liquid lard to the cooler.

I claim- 1. In a lard-press, the combination with an outer casing or tank, of an inner perforated IOO vessel secured within the tank; a movable false bottom for said inner Vessel; vertical straps projecting from said false bottom; a

plunger or platen itting the inner vessel;l means for lowering and raising said platen; and means carried by the platen for detach-y ably engaging the straps of the false bottom.

2. In a lard-press, the combination withan outer Casing or tank, of an inner perforated vessel secured Within the tank; a movable false bottom for said inner vessel; 'vertical straps projecting from said false bottom and.

formed with perforations; aplungeror platen fitting the inner vessel; means for lowering 

